SH7280 Datasheet, PDF (854/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 17 Serial Communication Interface with FIFO (SCIF)
17.3.4 Transmit FIFO Data Register (SCFTDR)
SCFTDR is a 16-byte FIFO register that stores data for serial transmission. When the SCIF detects
that the transmit shift register (SCTSR) is empty, it moves transmit data written in the SCFTDR
into SCTSR and starts serial transmission. Continuous serial transmission is performed until there
is no transmit data left in SCFTDR. The CPU can write to SCFTDR at all times.
When SCFTDR is full of transmit data (16 bytes), no more data can be written. If writing of new
data is attempted, the data is ignored.
SCFTDR is initialized to an undefined value by a power-on reset.
Bit: 7
6
5
4
3
2
1
0
Initial value: -
-
-
-
-
-
-
-
R/W: W W W W W W W W
Rev. 1.00 Jun. 26, 2008 Page 824 of 1692
REJ09B0393-0100